Here are 50 mixed‑tense gap‑fill sentences. Fill each blank with the correct verb form.

1. We usually (start) work at 8 a.m., but today we (begin) later.
   
2. While I (prepare) dinner yesterday, the lights suddenly (go) out.
   
3. By the end of next year, they ___ (complete) the new highway.
   
4. Look! The kitten ___ (chase) its own tail right now.
   
5. I ___ (not / speak) to my cousin since last autumn.
   
6. If you call me at 7, I ___ (drive) to the gym.
   
7. Scientists believe they ___ (find) a cure for the disease by 2032.
   
8. Whenever it rains, the streets ___ (flood) quickly in this town.
   
9. She said she ___ (return) the book tomorrow.
   
10. At 10 p.m. last night, we ___ (watch) a thriller movie.
    
11. This time next week, we ___ (relax) on a beach in Spain.
    
12. How long ___ (you / study) English before you moved to London?
    
13. The conference ___ (already / start) when the CEO arrived.
    
14. I can’t believe you ___ (lose) your passport again!
    
15. By the time the ambulance arrived, the patient ___ (already / leave) with a friend.
    
16. If he ___ (practice) more, he would have won the competition.
    
17. As soon as the rain stops, we ___ (continue) our hike.
    
18. They ___ (build) that bridge for over a year now.
    
19. What ___ (you / do) at 6 a.m. tomorrow?
    
20. When I was five, I ___ (think) the moon followed me home.
    
21. She usually ___ (write) in her journal every night.
    
22. The chef ___ (make) dessert while the guests were chatting.
    
23. So far this quarter, the company ___ (earn) record profits.
    
24. If the weather had been warmer, we ___ (go) swimming yesterday.
    
25. I expect the results ___ (be) available next Monday.
    
26. While we ___ (renovate) the attic, we found an old photograph.
    
27. By 4 p.m., we ___ (collect) all the data we need.
    
28. The train ___ (leave) at exactly 18:40, so don’t be late.
    
29. I ___ (wait) for you outside the café when it started to snow.
    
30. She ___ (not / finish) her assignment yet.
    
31. Tomorrow at this time, he ___ (fly) over the Atlantic.
    
32. Every spring, the farmers ___ (plant) cotton in these fields.
    
33. They said they ___ (already / make) a reservation.
    
34. How many times ___ (you / see) that film?
    
35. The students (be) very quiet because they (take) an exam then.
    
36. By the 22nd century, humans ___ (visit) several exoplanets.
    
37. I wish I ___ (know) the answer during the interview yesterday.
    
38. Listen— the orchestra ___ (tune) their instruments.
    
39. We ___ (jog) for 30 minutes before we realized it was raining.
    
40. She promises she ___ (send) the files by noon.
    
41. Since January, he ___ (read) one novel a week.
    
42. If you heat ice, it ___ (melt).
    
43. When I entered the lab, the technicians ___ (test) the new device.
    
44. By the time you get home, I ___ (cook) dinner.
    
45. They ___ (celebrate) their golden anniversary next month.
    
46. The mountain road ___ (close) every winter because of heavy snow.
    
47. How long ___ (they / negotiate) before they reached an agreement?
    
48. I didn’t know you ___ (learn) Japanese these days.
    
49. At 2 p.m. yesterday, the team ___ (discuss) the budget proposal.
    
50. By the end of the semester, we ___ (write) three research papers.
    
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    Tip: After completing the gaps, label each answer with its tense to reinforce your understanding (e.g., Present Simple, Past Perfect Continuous). Enjoy practicing!

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